I've got a question for those who have the Twalcom-QD exhaust on their 800gs, or anyone who knows....! Has anyone replaced the subject item at his silencer? The link: http://www.landparts.com/info.php/i/643/in/tt-by-qd-regeneration-kit-for-rear-silencer-homologated-tip-2.html I am asking as according to Twalcom: "With the QD Regeneration Kit you can recover the sound emission level, just as a new homologated Rear Silencer. To ensure the performance of the Rear Silencer is recommended to replace the sound absorbing cartridge approximately every 7000 km." This has only to do with the sound emission as i can understand and not with the silencer's performance.... or not? (my 800 has already 9000km with the qd can....) Any clue?